Telephone-mouthpiece.



G. H. REED.

TELEPHONE MOUTHPIEGE.

APPLIGATION FILED JAILIG, 1909.

932,323. Patented Aug. 24, 1909.

UNITE STATES PATENT FFIQE.

GEORGE H. REED, OF NEW YORK, N. Y.

TE LE PHONE-MOUTHPIE CE To all whom it may concern:

Be it known that I, GEORGE H. REED, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Telephone-Mouthpiece, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in telephone mouthpieees, and more particularly to means for rendering the mouthpiece antiseptic and for increasing the volume of the sound transmitted.

Various different deviceshave been designed to carry out the general object of my invention, but all of them with which I am familiar possess certain disadvantages either in that they are too expensive to manufacture, too easily detached or dislocated, or interfere with the normal operation of the telephone. In my improved device I provide an annular disinfecting pad within the mouthpiece intermediate the ends thereof and held in place by a. reticulated metal diaphragm. The diaphragm and pad may be readily removed or replaced, and the mouthpiece in presenting a large bell-shaped outer end increases the effect of the voice upon the diaphragm of the transmitter.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the figures, and in which- Figure 1 is a. perspective view of a telephone transmitter provided with my improved mouthpiece; and Fig. 2 is a longitudinal section through my improved mouthpiece.

Various different forms of mouthpieces may be constructed in accordance with my invention, but the essential features are the enlarged outer open end and the means for securing the annular antiseptic pad in position. In the specific form illustrated in the accompanying drawings, I employ a mouthpiece 10 of rubber or the like, having a threaded end 11, by means of which the mouthpiece may be secured in place, and having a perforated diaphragm 12. The mouthpiece portion 10 may be the ordinary mouthpiece now manufactured or used, or it may be manufactured particularly as an element of my device. Outside of the mouthpiece 10 I provide a sheet metal shield Specification of Letters Patent.

Appiication filed January 16, 1999.

Patented Aug. 24:, 1909.

Serial No. 472,627.

13, substantially conical in form and having firm engagement with the outer surface of the mouthpiece 10.

In assembling the two parts, the mouthpiece 10 is placed within the open end of the mouthpiece portion 13 and forced to the limiting position. The outer metal portion 13 is then beaded or otherwise distorted to form an inwardly-directed bead 14, adjacent the edge of the mouthpiece portion 10 and serving to prevent the separation of the two portions. Adjacent the peripheral edge of the mouthpiece portion 10, I insert an an nular pad 15, saturated with disinfecting material, and over this pad I insert a wire gauze diaphragm 16, the free edges of which engage with the mouthpiece portion 13 intermediate the bead 14 and the free edge of the mouthpiece portion 10. The bead thus serves the triple purpose of holding the two mouthpiece portions together, holding the annular pad in position, and holding the wire gauze diaphragm 16 in engagement with the pad. The outer end of the mouth piece portion 13 may be beaded or flanged in any suitable manner to avoid the presentation of a sharp cutting metal edge, and this outer end is of considerably larger diameter than the ordinary mouthpiece. This serves to center the sound and direct it more effectively to the diaphragm of the transmitter.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A telephone mouthpiece, including a conical shield having an annular groove in its inner surface intermediate its ends, an annular disinfecting pad adjacent said groove, and a wire auze diaphragm extending transversely of the mouthpiece and having its edge disposed within said groove and serving to hold said pad in position.

2. A telephone mouthpiece including a conical inner section, a conical outer section concentric therewith, said outer section having an inwardly-directed bead intermediate its ends and adjacent the end of the inner section, for holding the two sections against relative longitudinal movement, an annular disinfecting pad adjacent said bead, and a wire gauze diaphragm having its periphery in engagement with the outer conical section adjacent said bead and serving to hold in place said annular pad.

3. A telephone mouthpiece, including an inner conical section, an outer conical section concentric therewith and having an inwardly-directed bead intermediate its ends and adjacent the end of the inner section for holding the two sections against relative longitudinal movement, and a Wire gauze diaphragm having its periphery in engagement with the outer conical section intermediate the inner section and the bead in 10 the outer section. I

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

GEORGE I-I. REED. \Vitnesses:

C. V. FAIRBANK, JOHN P. DAVIS. 

